Description
A precision cold extraction method that balances solubility kinetics with volatile preservation.
Technical
Utilizes gravitational potential energy and controlled pore-size diffusion to selectively extract caffeine (1,3,7-trimethylxanthine) and chlorogenic acids while minimizing tannin dissolution. Glass towers provide thermal stability and visual feedback.
Culinary Significance
Produces a clean, nuanced coffee concentrate with 67% less acidity than hot brewing, ideal for cocktails or undiluted sipping.
Science
Primary Reaction
Non-equilibrium solid-liquid extraction
Parameters
Temperature
10°C optimal
5°C to 15°C range
Time
8 hours
4 hours – 12 hours
Equipment
Tower-style glass dripperNeedle valve regulatorLaboratory-grade filtersCarafe with argon flush